kernel config

kernel config

[James]

 CONFIG_SATA_AHCI
│ This option enables support for AHCI Serial ATA. │
│ │
│ If unsure, say N.

CONFIG_ATA_SFF: │
│ │
│ This option adds support for ATA controllers with SFF │
│ compliant or similar programming interface. │
│ │
│ SFF is the legacy IDE interface that has been around since │
│ the dawn of time. Almost all PATA controllers have an │
│ SFF interface. Many SATA controllers have an SFF interface │
│ when configured into a legacy compatibility mode. │
│ │
│ For users with exclusively modern controllers like AHCI, │
│ Silicon Image 3124, or Marvell 6440, you may choose to │
│ disable this unneeded SFF support.


I recently configured and compiled the 2.6.35.1 kernel.
I suggest moving
│
│ For users with exclusively modern controllers like AHCI, │
│ Silicon Image 3124, or Marvell 6440, you may choose to │
│ disable this unneeded SFF support.
to the CONFIG_SATA_AHCI option.

Re: kernel config

[Brian Waters]

If you think this is a good idea, then you should try submitting a
patch for it. The file you want to modify is drivers/ata/Kconfig. It
should be pretty obvious what to change. There is lots of info online
about creating patches.

- Brian Waters




On Wed, Aug 11, 2010 at 1:18 PM, James <bjlockie@lockie.ca> wrote:
>  CONFIG_SATA_AHCI
> │ This option enables support for AHCI Serial ATA. │
> │ │
> │ If unsure, say N.
>
> CONFIG_ATA_SFF: │
> │ │
> │ This option adds support for ATA controllers with SFF │
> │ compliant or similar programming interface. │
> │ │
> │ SFF is the legacy IDE interface that has been around since │
> │ the dawn of time. Almost all PATA controllers have an │
> │ SFF interface. Many SATA controllers have an SFF interface │
> │ when configured into a legacy compatibility mode. │
> │ │
> │ For users with exclusively modern controllers like AHCI, │
> │ Silicon Image 3124, or Marvell 6440, you may choose to │
> │ disable this unneeded SFF support.
>
>
> I recently configured and compiled the 2.6.35.1 kernel.
> I suggest moving
> │
> │ For users with exclusively modern controllers like AHCI, │
> │ Silicon Image 3124, or Marvell 6440, you may choose to │
> │ disable this unneeded SFF support.
> to the CONFIG_SATA_AHCI option.
> --
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Kernel config

[Vijay Khemka]

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Hi,
I need to add extra kernel config for our tiogapass platform and I added extra configuration in tiogapass.cfg file under conf/machine. I am not seeing these getting added to kernel config file. Please suggest right place to add our platform specific extra kernel config options.

Regards
-Vijay

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Re: Kernel config

[qianlihu]

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Hi Vijay

You can refer to
https://github.com/openbmc/openbmc/tree/master/meta-ibm/meta-romulus/recipes-kernel/linux

The bbappend file tells us that the cfg file will be merged into the kernel
cfg

You can use devtool to generate these file :

devtool update-recipe  linux-aspeed -a
/home/xxxxxxx/openbmc/meta-facebook/meta-tiogapass

On Tue, Jan 8, 2019 at 8:38 AM Vijay Khemka <vijaykhemka@fb.com> wrote:

> Hi,
>
> I need to add extra kernel config for our tiogapass platform and I added
> extra configuration in tiogapass.cfg file under conf/machine. I am not
> seeing these getting added to kernel config file. Please suggest right
> place to add our platform specific extra kernel config options.
>
>
>
> Regards
>
> -Vijay
>

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Re: Kernel config

[Vijay Khemka]

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Thanks qian,
I have similar bbappend but I have missing tiogapass in FILESEXTRAPATHS_prepend. Let me try this.

Regards
-Viajy


From: qianlihu <wangzhiqiang8906@gmail.com>
Date: Monday, January 7, 2019 at 5:03 PM
To: Vijay Khemka <vijaykhemka@fb.com>
Cc: "openbmc @ lists . ozlabs . org" <openbmc@lists.ozlabs.org>
Subject: Re: Kernel config

Hi Vijay

You can refer to https://github.com/openbmc/openbmc/tree/master/meta-ibm/meta-romulus/recipes-kernel/linux

The bbappend file tells us that the cfg file will be merged into the kernel cfg

You can use devtool to generate these file :

devtool update-recipe  linux-aspeed -a /home/xxxxxxx/openbmc/meta-facebook/meta-tiogapass

On Tue, Jan 8, 2019 at 8:38 AM Vijay Khemka <vijaykhemka@fb.com<mailto:vijaykhemka@fb.com>> wrote:
Hi,
I need to add extra kernel config for our tiogapass platform and I added extra configuration in tiogapass.cfg file under conf/machine. I am not seeing these getting added to kernel config file. Please suggest right place to add our platform specific extra kernel config options.

Regards
-Vijay

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Re: kernel config

[Cliff White]

> Cliff
> 
> Thanks for your input. I've checked the tests you ran and found that the kernel 
> config was set at default which means preemptible and low latency were 
> disabled. I dont see a way of changing the kernel config, and I need these 
> enabled in the tests. Suggestions?
> 
> Regards,
> Con Kolivas
> 
> 
Thanks for the thanks. We don't have a way to tweak the .config per test 
currently.
The .config is adjusted automagically for the machine type.
However, there is a workaround. The PLM supports chains of patches, so you
could do a short diff from -ck3 with only the switch changes, and that
can be applied to -ck3 (PLM #768) automagically by the PLM. 
If you aren't yet up on the PLM, i'd be glad to do the submitting if you
send me the diff.
cliffw